[FollowSteph3]

To make it really work I think the cost would have to go up exponentially with time. Maybe once a decade you pay. And you could even pre-purchase but at the exponential price. This would allow most works protection early on at an affordable price and companies like Disney that make a lot of money to be able to keep their copyrights.

The other major benefit is that if something is successful and people want it such as a book you have a monetary incentive to publish it to pay the copyright fees. When it's not popular enough to make money with the copyright alone than that's a good signal that it's been copyrighted long enough